#include<string.h>
#define size 1024
typedef struct _FILE
{
	int fd;
	int flush_mode ;
	char  outbuffer[size];
	int out_pos;
}_FILE;

_FILE * _fopen(const char * filename ,const char*  mode);
int _fwrite(_FILE * fp,const char * msg,int len);
void _fclose(_FILE * fp);

